TIFU and almost got my coworker fired.

I’ve been working at this company for a little over 2 years now and I’m pretty known between our drivers that i always help them whenever they have any problems, whether they’ve messed up something with a customer, miss calculated their money or anything in general.

Something you should know, this is a new driver and he “forgot to cash out 700$” few days ago. So it was kinda messed up with him. He also had a pretty bad accident in one kf the company’s cars.

Today, this driver had his money all messed up and asked me to check the system for him and try to fix it which i usually do. But, i somehow miss calculated an order and mistakenly doubled it’s price. He went to pay for the accountant and he was also going to pay the 700$, his money were missing and they started accusing each others of miss handling the money and that they are not trust worthy and stuff of that sort. He went out of their office mad, screaming and apparently he was fired. The manager followed him trying to understand what happened etc.

Then around 30 mins later, he came back to me asking me if i can double check what i did, and i obviously did. I was so embarrassed and i felt like shit knowing i almost got him fired, made him fight with 2 people, and made them doubt him. I apologized many times and he was cool about it saying he knows i wouldn’t do it on purpose, and that it isn’t the first time i do this for him even though it isn’t my job and stuff like that. I still feel weird about it even though it’s been hours.

TL;DR i messed up my coworkers payment by mistake, had him fight with the accountant and almost got him fired when i was trying to just help him.